Abstract [en]

This is an investigation of a mobile prefabrication factory´s competitiveness and profitability which also will result in a suggestion for a design of the factory. The mobile prefabrication factory is an idea of a new concept for production which is meant to be used in the manufacture of slab. The main intention with this concept is that by using a fast established prefabrication factory to produce elements near the construction site, thus avoiding transport from the factory to the building site. This means not only an environmental and economic gain, but also that you can avoid risking damage the elements which often occur during transportation. The contractor is owner of the mobile prefabrication factory and can thus avoid long waiting times and cyclicality. These are parameters that often can be a concern when using prefabricated element from factory´s off-site. When the building is finished, the prefabrication factory is able to be packed onto trucks, moved, and reestablished close to next building site. The portable production capacity also means that production can be kept close to the product development and can therefore quickly test new solutions, thus this concept facilitating a continuous improvement.

After a rough estimate of the cost for the establishment, operation and maintenance turned out that the mobile prefabrication factory needs to be established by large projects that require more than 7 970 m2 of slab in order to recoup these expenses. Then to recoup the investment cost of 5, 64 million crones the project must have a need for more than these 7 970 m2 of slab. Counting on a life expectancy of 30 years for the mobile factory, the factory needs to produce 1 568 m2 of slab á year, in addition to the slab required for accrued cost for establishment.